BB is 400 and I'm second place in chips with six remaining. I guess this was me preserving my stack. I didn't want to 2.2x it and then get 3bet. I probably didn't like how BTN has a 9% 3bet and BB has a 15% 3bet.

The stakes I play are much lower than this, so my opponents probably play very different than the ones here. Also, I have yet to invest in apps that help calculate equity and icm, etc.

My initial response when seeing this situation would be to shove, but I see the dilemma here. If the table has been playing super tight and you aren't willing to go all-in preflop, I think a 2.2x open is okay because you can get away from it and still have 10bb remaining. I think a 2.2x raise also looks very strong here because you are inviting people to play a pot with you, so they would need strong holdings to be willing to play.

The min-raise/fold would be good if you thought you could rely on them to jam only hands that dominate you and flat with lots that you dominate. But for example I would jam suited wheel aces and things like that over a min-raise from your position here, so it wouldn't be good against me.

BB is 400 and I'm second place in chips with six remaining. I guess this was me preserving my stack. I didn't want to 2.2x it and then get 3bet. I probably didn't like how BTN has a 9% 3bet and BB has a 15% 3bet.

you can also preserve your stack by shoving in +ev spots and gaining chips. Not by folding and paying blinds and antes.

If you think they 3bet too much, then why not raise/call?

In this spot tho, as it is FT and there is some ICM, shove is a standard and I think the only play here.